is a lunar crater
in the northern part of the Moon
, on the north edge of Mare Frigoris
. It forms part of the southwestern wall of the large and irregular W. Bond walled-plain
. The rim of Timaeus is somewhat pentagonal
in shape, with rounded corners. There is a central rise in the mid-point of the crater floor.
The irregular terrain to the west of Timaeus displays a degree of streaky parallelism, as was noted by the Rev. T. W. Webb. These follow a path slightly to the east of north.